Concrete form tie



Oct. 18, 1938. A. v. ROEMISCH CONCRETE FORM TI-E Fi'led Nov. 11, 1936Patented Oct. 18, 1938 UNITED STATES PATENTOFFICE CONCRETE FORM TIEAllen V. Rocmisch, Inglewood, Calif.

Application November 11, 1936, Serial No. 110,245

2 Claims.

My invention relates to a concrete form tie, and has for its principalobject the provision of a relatively simple, practical and inexpensivetie that is capable of being easily and quickly applied to forms inwhich the concrete is poured to produce walls, partitions and the like.

A further object of my invention is to provide a concrete form tie thatis readily adjustable so as to be applied to forms of different widths;

further to construct the ties so that they may be readily taken apartand removed from the forms and concrete after the latter has become set;and, further, to provide a tie that is positive in its action ofmaintaining the forms in proper 5 spaced relation.

With the foregoing and other objects in view my invention consists incertain novel features of construction and arrangements of parts thatwill be hereinafter more fully described and claimed and illustrated inthe accompanying drawing in which:

Fig. 1 is a perspective view of the tie rod that extends through thewalls of the form and through the concrete that is poured between saidwalls.

Fig. 2 is a perspective view of a wale engaging bracket that isdetachably applied to one end of the tie rod and showing the eccentriclever utilized for imparting movement to said bracket.

Fig. 3 is a. perspective view of the bracket that is adjustably mountedon one end of the tie rod. Fig. 4 is a vertical section taken through aportion of a form and showing my improved tie applied thereto. Fig. 5 isan enlarged horizontal section taken on the line 5-5 of Fig. 4.

Referring by numerals to the accompanying drawing which illustrates apreferred embodiment of my invention, l0 designates a metal rod thatfunctions as the tie between the walls of the form, and which passesthrough the concrete that is poured between said walls and to facilitatethe removal of this tie rod the greater portion thereof is graduallytapered toward one end, said tapered portion being designated by Illa.

Formed through the cylindrical end portion of this tie rod is a row ofspaced apertures II and formed through the opposite end of the rod is asingle aperture I2.

Removably and adjustably seated on the cyl-.

indrical portion of the tie rod is a substantially L-shaped bracket l3that is adapted to engage against the outer faces and against one of the55 lower faces of a pair of wales W that are positioned against theuprights or studs U to which the sheeting S of the form is secured.

The upright member of the bracket l3is provided on its outer face with acollar or flange l4 and formed therethrough and through the uprightmember of the bracket is an aperture I5 that receives the cylindricalend of the tie rod I 0. The collar I5 is provided with a verticallydisposed aperture l6 that intersects the aperture l5 and when thebracket is applied to the tie rod 10 a pin P is inserted through theaperture l6 and through one of the apertures l I, thus securing thebracket in its adjusted position on the end of the tie rod.

The tapered end of the tie rod ID that is pro- 15 vided with theaperture l2 is adapted to enter a tapered bore or recess "that is formedin the end of a short bar l8, the latter being formed of metal andpreferably square in cross section.

Formed through the recessed end of this bar 20 I8 and intersecting thebore I l is an aperture l9 and when the tapered end of the tie rod isinserted in the bore, a pin or key 20 is inserted through the aperturesl9 and I2, thereby detachably securing the bar l8 to the tie rod. 25

Arranged to slide freely lengthwise on the bar I8 is a substantiallyL-shaped bracket 2| that is adapted to engage against the outer facesand against the under face of one of the Wales that are positionedagainst the studs or uprights of 30 the concrete form and the outer faceof the upright member of this bracket 2| above and below the openingthrough which the bar l8 passes is made concave as designated by 22.

Pivotally mounted on the outer end of bar I8 35 is a bifurcatedeccentric 23 with which is formed integrally a short handle 24, and theedge of this eccentric is adapted to engage the concave face 22 of thebracket 2|.

In the use of my improved tie the forms comprising the uprights or studsU and the sheeting S are arranged in proper spaced relation, and afterthe wales have been applied to the uprights the rod I0 is positionedbetween one pair of the Wales and then moved horizontally throughapertures A that are formed in the sheeting so that the tapered endcontaining the aperture l2 projects a short distance beyond one of thewalls of the form.

The bracket I 3 is applied to the cylindrical end portion of the tie rodso that said bracket engages against the outer faces of a pair of thewales and against the end face of the lower Wale of each pair, and saidbracket is secured to the tie rod by the pin P which passes through theaperture l6 and one of the apertures II.

The bar I8 is placed between the wales on the opposite wall of the formwith the tapered end of the tie rod positioned in the bore l1 and saidbar is secured to the rod by means of the pin that passes through theapertures l9 and [2.

By means of the handle 24 the eccentric 23 is now rotated so as to bringthe high portion thereof into engagement with the concave face 22 of thebracket 2|, thus exerting pressure on said bracket, the wales that areengaged thereby and the wall of the form that is engaged by said wales,vthus firmly tying the two walls of the form in proper spaced relation.

The concrete is now poured into theform, and after said concrete hasbecome set and hard the bar I8 is removed from the end of the tie-rodand same may now be easily removed from the concrete, due to the taperedshape of that portion of the rod that passes through the concrete.

Thus it will be seen that I have provided a concrete form tie that issimple in construction, inexpensive of manufacture and very effective inperforming the functions for which it is intended.

The parts of the tie are capable of being readily assembled or takenapart and as the tie rod is tapered lengthwise it is capable of beingeasily removed from the Wale or other structure that is produced betweenthe walls of the form.

It will be understood that minor changes in the size, form andconstruction of the various parts of my improved concrete form tie maybe made and substituted for those herein shown and describedwithoutdeparting from the spirit of the invention, the scope of which isset forth in the appended claims.

I claim as my invention:

1. In a concrete form tie, the combination with a tapered rod providedin its large end with a plurality of spaced perforations of, an L-shapedbracket mounted for sliding movement on the perforated end of said rod,means removably seated in said bracket and said rod for securing saidbracket to the rod in difierently adjusted positions, a bar providedwith a socket adapted to receive the small end of the tapered rod,releasable means for securing the tapered rod to said bar, said barbeing non-circular in cross section, an L-shaped bracket mounted forsliding movement on said bar and an eccentric pivotally mounted on saidbar for engaging and imparting pressure to the bracket that slides onsaid bar.

2. In a concrete form tie, the combination with a tie rod formed in twodetachably connected parts, one of which gradually tapers toward one endand the other part being non-circular in cross section, of substantiallyL-shaped brackets mounted respectively on the parts of the tie rod,means for securing one of said brackets to the large end of the taperedmember of the tie rod in differently adjusted positions, means fordetachably connecting the two parts of the tie rod,'the bracket that iscarried by the non-circular' member of the tie rod being mounted toslide lengthwise upon said non-circular member and an eccentricpivotally mounted on the noncircular member of the rod beyond thebracket for engaging and imparting pressure thereto.

ALLEN V. ROEMISCH.

